Cab meter



Sept. 30,1947 I v T. HoN

CAB METER s Sheets-Sheet 1 Filed Aug. 25, 1945 h w R m .n ma mm ..F T

p 1947 T. HORN. 2,428,080

CAB METER FiledAug. 23, 1945 5 Sheets-Sheet 2 VAQANW IINVENTOR. Thu/"manHorn T TOENE Y T. HORN GAB METER Sept. 30, 1947 5 Sheets-Sheet 5 FiledAug. 23, 1945 INVENTOR Thu/man Horn W TTO NEY Sept 30, 1947 T. HORN CABMETER Filed Aug. 25, 1945 s Sheets-Shet 4.

m M E m 1%! a V.

p 30, 1947 T. HORN 2,428,080

CAB METER- Filed Au 25, 1945 S ShVeetS-Shet 5 M INVENTOR. f g-7 IThurmah Horn ATTORNEY Patented Sept. 30, 1947 UNITED STATES PATENT,OFFICE CAB METER Thurman Horn, Anniston, Ala; assignor 'to.

Cabometer, Inc., a corporation of Alabama Application August 23, 1945,Serial No. 612,261 11 Claims. (o1. 235-30) Y I This invention relates tometers of the type installed in taxicabs for registering the fares,number of trips made, and other information, and has foran object theprovision of apparatus of the character designated which shall becharacterized by simplicity of construction, involving few parts whichmay be readily assembled and disassembled, without the necessity ofspecial tools, and which may be readily mounted on, and connected with,the usual odometer drive of a motor vehicle.

7 A further object of my invention is to provide a meter of thecharacter designated which shallinclude a main actuating cam which shallbe easily adaptable to any basic fare structure.

A still further object of my invention is to provide a meter of thecharacter designated which shall be rugged and simple of construction,accurate in operation, and of relatively low cost of manufacture. l

Briefly, my invention comprises a multilobed cam, driven from the usualodometer drive on the vehicle through a suitable gear train, which camthrough suitable connections, drives the fare registering mechanism. Thecamis mounted on a, shaft in bearings on a carrier frame which isadapted to raise it out of engagement with the drive and lower it intoengagement with the drive by a cam mounted on the flag shaft of themeter. Mechanism for registering the number of trips made is actuated bythe carrier frame each timethe ,flag shaft is operated. A unique featureof my invention resides in means to rotate the main actuating cam shaftto a, predetermined starting position each time the flag shaft isoperated, together with means to move the actuating pawl for the fareregistering mechanism to a predetermined starting position each time theflag shaft'is operated. Also, included in my im-, proved meter are meansactuated from the main operating cam to register the number of fareunits accumulated by the vehicle and also the number of revenue milesrun. There is further included in the mechanism, means for returning thefare registering mechanism to a predetermined initial position eachtimethe fla shaft is operated.

Apparatus embodying features of my invention is illustrated in theaccompanying drawings, forming a part of this application, in which Fig.1 is a diagrammatic, perspective view showing the various parts in theiroperating relationship;

Fig. 2 is a, front view of the meter, with the outer front wall removedand with the shutter broken away;

Fig. 3 is a side View of the mechanism, with the side of 'the casingremoved;

Fig. 4 is a top plan view;

Fig. 5 is a bottom plan view;

Figs. 6 and 7 are detail front and side views respectively of themutilobed cam;

Fig. 8 is a detail view of the stop pawl arm and pawls; and

Figs. 9 and 10 are detail views showing the cam shaft drive connectionfrom the chronometric device. I

Referringto the drawing, my improved meter is mounted in a casing havingsides 5 and 6, in a rear wall 1 and an inner front wall 8. An outerfront wall'9, spaced from the wall 8 forms a narrow housing for thedialsof the fare registerin mechanism, and for a shutter adapted to coversaid dials attimes, all to be described later. The casing thus describedis adapted to have mounted thereon top and bottom covers which are notshown. The casing as shown is especially adapted for mounting in thelove compartment of a motor vehicle. I

At I0, I show a worm shaft which is adapted for connection to the usualodometer, or speedometer drive of ,a vehicle. A worm ll mounted on theshaft H! is adapted to engage with a worm wheel [2, and is mounted freeto rotate on a main cam shaft'l3. A pawl l4 on the wheel I2 is held inengagement with aratchet wheel 16 mounted on the shaft l3. A spring"holds the pawl 14 in engaged position, as shown in Fig, 1, so that theWorm wheel l2 will drive the shaft 13 in a counter clockwisedirection,as indicated, but the shaft l3 may be driven by other means such as bythe chronometric apparatus l8, drive shaft 19, worm wheel 20, worm 2|,pawl 22, and ratchet wheel 23. The purpose of this latter drive is toassume the driving of the meter in. slow traflic, or during waitingtime.

The main cam shaft I3, is mounted in bearings 24 and 26 on acarrierframe 21. The frame 21 ispivotally mounted at 28 in a bracket 29secured to the side 6 of the casing; A spring 30 serves to bias theframe downwardly. The carrier frame 21 is somewhat rectangular in shape,as may be seen from Figs. 1, 4 and 5 of the drawings, and includes anarm member 32 projecting across the casing. 'At 33 is shown the meterflag shaft which extends through the meter casing, being mounted inbearings 34 and 36. A cam 31,'mounted on the flag shaft 33, is adaptedto engage the arm 32 of the carrier frame and raise the carrier framewith the worm wheels I2 and 29 to disengage them from the worms II and2I, each time the flag shaft is rotated to raise the customary flagshown at 38.

Mounted on the end of the main cam shaft I3 opposite the gear I2 is acylindrical member 39 having a spiral groove 4I around the peripherythereof, which groove terminates in a multilobe cam member 42. See Figs.6 and 7. As shown in Fig. 6, the cam member is provided with three lobes42a, 42b and 420 to adapt the meter for registering each third of amile, it being assumed that the basis of charge is by the third of amile.

Extending across the casing, over the drive shaft I3 is a ratchet arm 43the function of which is to actuate the fare registering mechanism, tobe described later. The ratchet arm 43 is pivotally mounted to swing ina horizontal plane at 44 in a bracket 46, which is pivotally mounted toswing ina vertical plane at 41. The arm 43 is thus adapted to swing bothin a horizontal and in a vertical plane. It is biased downwardly bymeans of a spring 48. The bracket 46 upon which the arm 43 is mounted isprovided with a depending arm "having a slotted end I, which arm isadapted to operate the fare unit registering mechanism, to be describedlater. The ratchet arm 43 carries a blade 52 on its under side which isadapted to ride on the cylindrical member 39 when in engagementtherewith and be actuated by the multilobe cam member 42 which forms apart of the cylindrical member 39. The pivoted ratchet-arm 43 extendsacross the casing and over an arm 56 forming a part of the carrier frame21. The. arm 56 has mounted thereon an inclined cam plate 51 which isdirectly under the ratchet arm 43. It will be noted from Figs. 1 and 4that the ratchet arm 43 is pivoted on side 5 of the casing opposite thepivot of the carrier frame 21 so that when the carrier frame is raisedby the cam 31, the inclined cam plate 5'! engages the ratchet arm andraises it up out of engagement with the cylindrical member 39. When thisoccurs, the spring 48, coacting with the inclined surface of the camplate 51 causes the ratchet arm to move laterally to a positionlimitedby a stop member 58 carried by the cam plate 51. Thus, each timethe carrier frame is raised, the ratchet arm 43 is returned to a,predetermined starting position, in which position the blade 52 isengaged in the outer end of the spiral groove 4|.

Pivotally mounted. at 5 9 onthe carrier frame 2! is a roller arm 8 Icarrying a roller 62. The arm BI is connected, adjacent its pivot point,to a link 53 extending downwardly to the bottom of the casing where itis connected to a bracket 64 by means of a spring connection 66. SeeFig. 3. At '61 is shown a cam, mounted on the drive shaft I3, directlyunder the roller 62, so that when the carrier frame 21 is raised,raising the gear I2 out of engagement with the worm II, the cam 61engages the roller 52 and the roller rotates the drive shaft. I3 to apredetermined starting position in which the outer end of the spiralgroove 4| on the cylindrical member 39 is directly beneath the blade 52on the ratchet arm 43.

The fare registering mechanism comprises a dial II upon whichthefractions of a dollar are registered and a dial 12 upon which thedollars are registered. The dial II is mounted on a shaft I3 which issuitably mounted in bearings 4 I4 and I6 inside the casing. The shaft 13has mounted thereon an actuating ratchet TI and a. holding ratchet 88. Areturn spring 89 has one end secured to the shaft I3 and the other endfrictionally engaged with a drum 9I secured to a bracket 92, mounted onthe side of the casing. The dollar indicating dial "I2 is mounted on ashaft 93 extending parallel to the shaft I3 and which carries anactuating and holding ratchet 94. A return spring 96 has one end securedto the shaft 93 and its other end frictionally engaged with a drum 97,also carried by the bracket 92. The shaft 93 is adapted to rotate in adirection opposite to the shaft 13 and accordingly the spring 96 iswound in a direction opposite to that of the spring 89. At 98 I show astop member which is pivotally mounted on the casing and which isadapted to engage a stop pin 99 on the dial II when the shaft I3 isreleased for return movement. The pin 99, as is well understood, isusually positioned so that the dial II will show an initial fare. At I9II show a similar stop member, which is pivotally mounted on the casingand which is adapted to engage with the stop pin I92 when the dial I2and its shaft 93 are released for return movement. The initial positionof the dial I2, as is well understood, is usually at zero. Both the stopmembers 98 and II permit the stop pins 99 and I92 to pass when the dialsare rotating in a direction to register a fare, but are adapted toengage the stop pins when the shafts are released to be returned bytheir springs 89 and 96.

The fare registering mechanism just described is actuated from theratchet arm 43 by means of a pawl I93 pivotally mounted at I94 on theratchet arm and biased for engagement with the actuating ratchet wheel,11 by means of a spring I96. A pin ID! on the outer end of the ratchetarm 43 is so positioned that the ratchet arm can move the actuatingratchet wheel '11 only one notch at a time. When the carrier frame 21 israised by rotation of the flag shaft 33, as previously described, theratchet arm 43 is moved laterally by the cam plate 51, to a positionwhere the pawl I93 is out of engagement with the ratchet wheel 'I'I'.Asthe shaft I3 rotates, with the cylindrical member 39, the blade 52,riding in the spiral groove 4I, moves the ratchet arm 43 laterally to aposition where the pawl I95 is in position to engage the teeth of theratchet wheel 'I'I. Thus, the fare registering mechanism is not actuateduntil the vehicle has gone a predetermined minimum distance determinedby the length of the groove M. The minimum fare indicated on the dial'II compensates for this distance. When the blade 52 rides out of thegroove 4I, then each time it drops off one of the lobes 43a, 43b and430, the spring 48 pulls the ratchet arm 43 downwardly so that the pawlI93 a'c'tuates the ratchet wheel 11 one notch. Assuming the fare base tobe a third of a mile, the ratchet wheel 11 will move the fractional dialII one notch each of a mile thus indicating the accumulated fare. Theshaft I3 is held against return movement, by means of the holdingratchet wheel 88 which is engaged by a pawl I98 pivotally mounted at I99upon an arm I II which is pivotally mounted at II2 on the side 5 of thecasing and is biased upwardly by means of a spring 3. The pawl I08 alsohas one finger II4 which engages with the teeth of the actuating ratchetwheel 94 of the dollar registering dial I2 to hold it against returnmovement. The pawls I98 and H4 are moved out of engagement with theratchet wheels 88 and 94 by means of a cam I I6 mounted on the flagshaft 33 which cam is. rotated to disengage the pawls each time the flag38 is raised.

The dollar registering dial 12 is actuated one step each time thefractional dial holding ratchet 88 is rotated one complete revolution.This is accomplished by means of a pawl II1 pivotally mounted at II8 onthe ratchet wheel 88. This pawl is held in engagement with the ratchetwheel 94 by means of a spring II9 which permits theteeth on the ratchetwheel 94 to pass when the holding pawl H4 is disengaged and the spring96 isrotating the dial 12' in a counter clockwise direction, as viewedin Fig. l, to its initial starting position.

. At .I2I I showa cyclometer of well known construction and whichrequires no detailed description, which cyclometer is adapted toregister the number of revenue trips made by the cab, responsive to thenumber of actuations of the flag shaft 33.- The cyclometer I2I isactuated by means of a link I22 connected to the arm 32 of the carrierframe 21 at one end and at the other end to a bell crank lever I23pivotally mounted at I24 in the casing. The bell crank lever I22 isconnected at its other end to the operating arm I26 of the cyclometerI2I. As previously described, the cam 31 raises the carrier frame 21each time the flag 38 is raised, and lowers it each time the flag 38 islowered. By this means, the actuating arm I26 causes the cyclometer IZ'Ito register each time the flag is raised and lowered to indicate thecompletion of a trip.

At I28 I show a cyclometer, similar to the cyclometer I2I which isadapted to register the number of fare units recorded on the tireregistering mechanism responsive to actuation by the lobes 42a, 42b and4200f the cam member 42. This is accomplished by means of the dependingarm 49 of the bracket member 46. The slotted end 5I of this arm hasmounted therein one end I29 of a bell crank lever which is pivotallymounted at I3I in the casing. The other end of the bell crank lever I29is connected to the operating arm I32 of the cyclometer I28. By thismeans, each time the ratchet arm 43 israised and lowered by the lobes42a, 42b and 420, the cyclometer I28 is operated.

At I33 I show a cyclometer, similar to the cyclometers I ZI and I28,which is adapted to register the revenue miles made by the vehicle. Inorder to accomplish this function, I show on the cylindrical member 39 aplurality of axially extending pins I34. Inasmuch as the main cam shaftI3 is assumed to rotate one complete revolu-- tion for'each mile ofoperation, it is preferable to have ten of the pins I34. Pivotallymounted at I36 is a rod I31 having an upturned end I38 adapted to beengaged by the pins I34 and cause the rod to oscillate about its pivotpoint. The other end of the rod I31 is biased downwardly by means of aspring I39 and is connected by means of a link I4I to the operating armI42 of the cyclometer I33. The cyclometer I33 thus registers each tenthof a mile traveled by the vehicle when the meter is in operation.

As shown in Figs. 4 and 5, I provide a spring I44 on the flag shaft 33which engages with the side of the cam H6 at one end and with thebearing 34 at the other end. At I46 I show a cam mounted on the shaft 33which cam is provided with notches I41.. I also provide lateral notches:I48 in the side of the cam which are 6 adapted to engage with teeth I49on the end of the casing which teeth make it necessary, in order torotate the shaft 33, to pull the shaft outwardly and disengage theteeth; This precaution discourages tampering with the meter. Thenotches,,I41 on .the cam I46 are adapted to be engaged by a pawl I56pivotally mounted at I5I and carrying on its opposite end a shutter I53.The pawl I50 engaging with the teeth I41 prevents rotation of the flagshaft 33 except in a clockwise direction, as viewed in Fig. 2. Theshutter I53 is adapted to be raised by the cam I46 when the flag is inthe raised position with the cab awaiting a fare. :When a revenue tripstarts, the shaft is rotated so as to place the flag in the down.position, as shown in Fig. 1, whereupon the pawl I49 rides off the camI46,

and a spring I54 pulls the pawl I59upwardly;

thereby lowering the shutter I53 and disclosing the dials of the fareregistering mechanism.

From the foregoing description, the operation of my improved apparatuswill be readily understood. Assuming the cab idle, awaiting a fare, theflag 39 is in raised position, as shown in Fig. 2.. When a revenue tripbegins, the operator turns: the flag 38 to the down position, as shownin Fig. 1,. whereupon the cam 31 is turned downwardly and the spring 39pulls the carrier frame 21 downwardly to engage the gear wheel I2 withthe worm I 8, thereupon placing the registering mechanism in operation.This action lowers the shutter I53 disclosing the minimum fare. As thegear i 2 is rotated by the worm I I, it rotates the cylindrical member39 with its multilobe cam, thus actuating the ratchet arm 43 eachtime'the blade 52 drops off one of-the lobes of the cam. The-- ratchetarm 43 actuates the fare registering mechanism as previously described,step by step to indicate the fare, which indication is visible to. theoperator and passenger through the end of the.

casing as shown in Fig. 2. When the flag 38 was lowered, it actuated thetrip cyclometer I2I,' thus registering a revenue trip for the cab. Each1 time the blade 52 rides off one of the lobes 42a,

the end I38 of the rod I31 cause it to actuate the:

mileage indicating cyclometer I33 through the link I4! and the arm I42.When the revenue trip is ended, the flag 38.is raised to thepositionshown in Fig. 2, whereupon the cam II6 disengages the pawls I98and H4 from the ratchets 88 and 94, permitting the springs 89- and 96 toreturn the fare registering dialsto their original positions. Therotation of the flag shaft 33 also raises the carrier frame 21 andraises the gear I2 out of engagement with the worm II. At the same time,the roller 62 engages the cam 61 and rotates the drive shaft I3 to apredetermined starting position for the next revenue trip. Also,

when this occurs, the cam plate 51 on the arm 56 of the carrier frame 21engages the ratchet arm 43 and moves it to the right, as viewed in Fig.1, so that the blade 52 is ready to engage in the outer end of thespiral groove 4I in thecylindrical member 39, which is the startingposition for a revenue trip. It will be seen also that when the carrierframe 21 is raised the cylindrical mem ber 39 is raised with the pinsI34 out of engage ment with the trip member I31. The mileage indicatorthus operates only when the fare registermg mechanism'operates. When theflag 38 is aeeaoeo again lowered, the. cycle of operation just de-.scribed, begins again.

From, the. foregoing, it will be apparent that I- have. devised a cabmeter which is simple and rugged of construction, and reliable. inoperation. I be assembled in a minimum of time with simple tools anddoes not require expert attention in order to. keep. it in workingorder. Being simple of construction, and having so few parts, itsinitial; cost is. low, as well: asitsmaintenance cost.

While. I have. shown my invention in but one form, it will. be obviousto those skilled in the art that it is not so. limited, but is.susceptible of various, changes and modifications, without departingfrom. the spirit thereof, and I desire, therefore, that only suchlimitations shall be placed thereupon as are specifically set forth inthe. appended claims.

What I claim is:

1. In a cab. meter, fare. registering mechanism, a ratchet wheel bywhich the registering mechanism, is, actuated, an arm. pivoted to. swingvertic llly. and from side to side and having a pawl thereon. adapted toengage andoperate the ratchet wheelstepby. step, a cam member having acylindrical portion with a spiral groove therein terminating in aplurality of. lobes disposed beneath the pivoted arm, ablade on thepivoted arm adaptedto engage. in the spiral groove and to raise, and;lower the arm. responsive to engagement with. thelobes of thecam, amanually operableshaft, andcam means on said shaft operativelyconnected. to the pivoted arm to engage it with, and disengage it fromthe multiple lobed am.

2. In a cabmeter, fare registering mechanism,

a ratchet wheel by which the registering mechanism. is actuated, an armpivoted; to swing verticallyandfrom side to side and having a pawlthereon.adaptedto.engagevand operate the ratchet wheel stepbystep, a cammember having a cylindrical: portion with a spiral groove thereinterminating. in a plurality of lobes disposed beneath the. pivoted arm,a blade on the pivoted arm adaptedto engage in the spiral groove and toraise andlower. the arm. responsive to engagement withrthelobes of.thecam, acamshaft, a pivoted frame on whichsaid' shaft is mounted andhaving an. arm disposed beneath the pivoted arm, driving means for thecam shaft, a manually operable shaft, cam means on said shaft disposed;to, engage, the. pivoted. frame toraise and lower it to. disengage. thecam shaftfrom its driving means and-engageit therewith and othercammeanson the frame for engaging the pivotedarmto-raise and lower .it.with its-pawl andout of:

engagement with the. ratchet and to move it laterally for its blade toengage in the-outer endof;.the.spiral groove.

3 in a cab meter, fare registering mechanism, a ratchet wheel by whichtheregisteringmechanism is actuated, an armpivoted toswingverticallyland frpmsideto side and:having a pawl:

thereon adapted to engage andoperate the ratchet wheel step-bvstep, acammember having acy-v lindr qa-l p rtion, with; a spiral; groove therein:

a pivotedframe on which said-shaftismounted; ni a e nerm di p dh neathhe-pivoted.

arm, driving mea s. for thecam shaft, amanually operable shaft, cammeans on said shaft disposed to engage the pivoted frame to raise andlower it to disengage the cam shaft from its driving means and engage ittherewith, other cam means on the frame for engaging the pivoted arm tonism, a cam for actuating the fare registeringmechanism intermittently,a cam shaft, a driven gear mounted on the cam shaft, a driving gearadapted to mesh with the driven gear and drive it responsive tomovements of the vehicle, a pivoted frame upon which the cam shaft ismounted, means tomovethe frame. about its pivot to engage. anddisengagethe driving and the driven gears andto establish and disestablish anoperative. connection between the cam and the fare registeringmechanism.

5. In a taxicab meter, fare registering mechanism, a. cam for actuatingthe fare registering mechanism intermittently, a cam shaft, a drivengear mounted on the camshaft, a driving gear adapted. to mesh with thedriven gear and drive it responsive to movements of the vehicle, apivoted frame-upon which thecam shaft is mounted, means tomove the frameabout its pivot to engage and. disengage the driving and the drivengearsand toestablish and disestablish an operative. connection. betweenthe cam and the fare registering mechanism, and cam means coactingbetween the pivoted frame and the cam shaft totrotate the cam shaft to apredetermined starting. position each time the. driving and driven gearsare disconnected.

Ina. taxicab meter, fare registering mechanism, a cam. for actuating thefare registeringmechanism intermittently, a cam shaft, a drivenet andpawl connection, a second driving gear for said secondmentioneddrivengear, a chronornetric devicefor actuating said second driving gear, apivoted frame. upon which the cam shaftis mounted, means to move thefram about itspivot t o engagethe driving and driven gears and, toestablish and. disestablish an operative connection, between the cam andthe fare registering mechanism, and cam means. coacting between thepivoted.- frame and the cam shaft to rotate th Camshaft to apredetermined startshaft, a ratchet. and. pawl connection betweenearsarev disconnected.

7; In ataxicab meter, fare registering mechanism, a. camfor actuatingthe fare registering. Inechanisrn intermittently, a cam shaft, a drivengear mounted on. thecam. shaft, a ratchet and pawl connection, betweenthe driven gear andthe cam shaft, to provide relativemovement between thcam shaft and driven gear in one direction, a seconddriven gear. mountedon the cam said, gear andthe shaft, similar to the first mentionedratchet. and pawl connection, a second driving gear. for said secondmentioned driven gear, achronometric device for actuating said seconddriving gear, a pivoted frame upon which the cam shaft is mounted, meansto move the frame about its pivot to engage the driving and driven gearsand to establish and disestablish an operative connection between thecam and the fare registering mechanism, cam means coacting between thepivoted frame and the cam shaft to rotate the cam shaft to apredetermined starting position each time the driving and driven gearsare disconnected, means to register the times the pivoted frame israised and lowered, and other means to register the number of times thefare registering mechanism is actuated.

8. In a taxicab meter, fare registering mechanism, a cam member foroperating the fare registering mechanism and comprising a cylindricalmember having a spiral peripheral groove therein terminating at aplurality of lobes, a cam shaft, a driven gear mounted on the cam shaft,a driving gear adapted to mesh with the driven gear, a pivoted frameupon which the cam shaft is mounted, a ratchet arm pivoted to swing inplanes parallel to and transversely Of the frame and extendingtransversely over a part of the frame, a finger carried by the ratchetarm for engaging the cam member, a pawl carried by the ratchet arm, anoperating ratchet wheel on the fare registering mechanism which the pawlis adapted to engage, means to raise and lower the frame to disengageand engage the driving and driven gears, cam means cooperating betweenthe frame and the ratchet arm when the frame is raised to move theratchet arm laterally to a predetermined starting position and todisengage it from the cam member and the operating ratchet wheel, othercam means cooperating between the cam shaft and the pivoted frame torotate the cam member to a predetermined starting position, whereby whenthe frame is lowered to engage the driving and the driven gears, theratchet arm is lowered and its finger is brought into engagement withthe cam member at the starting point of the spiral groove, providing fora predetermined rotary movement of the cam shaft before the fingerengages the lobes of the cam member.

9. Apparatus as defined in claim 8 together with spring means to returnthe fare registering mechanism to a predetermined starting position whenthe ratchet arm is disengaged.

10. In mechanism of the character described, a fare registeringmechanism, a pivoted pawl carrying arm and ratchet for operating thefare registering mechanism, a cam member disposed adjacent the pawlcarrying arm and having a cylindrical portion with a spiral groovetherein terminating in a plurality of lobes, a blade on the pawlcarrying arm adapted to engage in the spiral groove and with themultiple lobed cam to actuate the ratchet, a flag shaft, and cam meanson the flag shaft operatively connected to the pawl carrying arm toengage and disengage it from the multiple lobed cam.

11. In mechanism of the character described, a main actuating cam havinga cylindrical body portion with a spiral groove therein and terminatingin a plurality of lobes, a fare registering mechanism, a pawl carryingarm and ratchet for operating the fare registering mechanism, a memberon the pawl carrying arm adapted to engage in the spiral groove and withthe lobes of the cam to actuate the ratchet, a fiag shaft, cam means onthe flag shaft operatively connected to the pawl carrying arm to engageand disengage it from the multiple lobed cam, other cam means on theflag shaft for releasing the fare registering mechanism when the ratchetarm is disengaged from the main actuating cam, and spring means includedin the fare registering mechanism for returning it to a predeterminedinitial position when the ratchet arm is disengaged.

THURMAN HORN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 584,216 French June 8, 18971,762,862 Gluck June 10, 1930

